Dual Gang Potentiometers and Arduino Nano

How would one go about wiring a Dual Gang Potentiometer to an arduino nano? Would I just double the wires together and wire to 3 pins on my arduino? Or would i use 6 pins off the arduino one for each spot on the pot? I intened to attempt to make a wireless (bluetooth) volume knob. Using 2 arduino Nanos each with an HC-05 bluetooth chip one master one slave the second arduino nano will need to have 2 rca outs and 2 rcas in.

For a digitally controlled volume control, you don't need a dual gang potentiometer. A single potentiometer would do. The Arduino that actually controls the volume (receiver) can control both channels based on one value.

If you want to control the volume of each channel individually, you will need two independent potentiometers at the transmitter.

sterretje: For a digitally controlled volume control, you don't need a dual gang potentiometer. A single potentiometer would do. The Arduino that actually controls the volume (receiver) can control both channels based on one value.

If you want to control the volume of each channel individually, you will need two independent potentiometers at the transmitter.

I see so then i know how to wire my pot then but how would I wire my rcas to the second arduino nano?

You will need more than just RCAs. You will either need a dual gang digitally controlled potentiometer (if they don’t exist, two single digitally controlled potentiometers) or an IC that you can control digitally.

Maybe digital volume control chips can give you some ideas. Found googling for arduino digital volume control.

to the second arduino nano?

You do not need two Arduinos, why do you think you do?

Grumpy_Mike: You do not need two Arduinos, why do you think you do?

From opening post, it's my understanding that OP wants to build his/her own remote controlled volume control. One Arduino sends volume setting, other one controls the volume based on received value.

Yes I want my own wireless volume control. I intend to use one nano to send the setting and the second nano to actually control my audio source.

So from my understanding what I'll need is as follows

Transmitter end-Arduino Nano, HC-05 bluetooth module, single gang potentiometer

Receiver end-Arduino Nano, HC-05 bluetooth module, dual gang digital potentiometer

Does that seem about right and that it would give me the correct control if programming is done right?

Justin20062003: Yes I want my own wireless volume control. I intend to use one nano to send the setting and the second nano to actually control my audio source.

You still don’t need two.

Grumpy_Mike: You still don’t need two.

How would you implement a wireless remote audio attenuator (line-level volume control) using only one Arduino? Usually a wireless link has both a sender and receiver.

Oh OK.

So this will be my digital pot. So I think I now have everything I need to make it.